Operation CHARM: Car repair manuals for everyone.

Test I: LFC 16/DTC B1925 - Passenger Air Bag CKT Shorted to Batt or Ign

I1 - I2:






I3 - I4:






I5 - I6:






Normal Operation
The Restraints Control Module (RCM) checks for passenger air bag circuit shorts to battery or ignition by monitoring the voltage of circuits 30S-JA11 (RD/WH) and 31S-JA11 (BK/WH) at pins 6 and 7. If the RCM detects a short to battery or ignition on either of these pins, it will store a Diagnostic Trouble Code (DTC) B1925 in memory and flash a Lamp Fault Code (LFC) 16 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger air bag circuit short to battery or ignition can be caused by:
^ a short to battery or ignition on circuit 30S-JA11(RD/WH).
^ a short to battery or ignition on circuit 31S-JA11(BK/WH).
^ a short to battery or ignition on the passenger air bag module.
^ an RCM internal concern.